(19)
(11)
EP 0 636 291 A1
(12)
(43)
Date of publication:
01.02.1995
Bulletin 1995/05
(21)
Application number:
93907567.0
(22)
Date of filing:
16.03.1993
(51)
International Patent Classification (IPC):
H04L
27/
34
( . )
H03H
17/
00
( . )
H03M
13/
23
( . )
H04B
14/
04
( . )
H04L
1/
02
( . )
H04L
25/
14
( . )
H03H
15/
00
( . )
H03H
21/
00
( . )
H04B
3/
04
( . )
H04J
11/
00
( . )
H04L
25/
03
( . )
(86)
International application number:
PCT/US1993/002451
(87)
International publication number:
WO 1993/021710
(
28.10.1993
Gazette 1993/26)
(84)
Designated Contracting States:
DE FR GB SE
(30)
Priority:
17.04.1992
US 19920870579
(71)
Applicant:
BELL COMMUNICATIONS RESEARCH, INC.
Livingston, New Jersey 07039-2729 (US)
(72)
Inventor:
KERPEZ, Kenneth, James
Pottersville, NJ 07979 (US)
(74)
Representative:
Dubois-Chabert, Guy, et al
Société de Protection des Inventions 25, rue de Ponthieu
F-75008 Paris
F-75008 Paris (FR)
(54)
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